Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
I last heard this song 10 years ago.
A. It has been 10 years when I have heard this song
B. It was 10 years since I last heard this song
C. It is 10 years since I last heard this song
D. It is 10 years when I have heard this song